The creation and publication of geological maps has historically been one of the primary functions of the AGS. All AGS maps are available as PDFs.
Beginning in 2002, most maps also have their data available in GIS shapefile format. To download the shapefiles for a map, click on the map’s title to view the abstract. If shapefiles exist, they will be in the ZIP file listed on the page. Shapefiles require specialized GIS software to open.
If a PDF file is too large to open directly using your browser, right-click on the PDF icon and save the file to your computer. Then open it on your computer using freely available PDF reader software.